Re: [Discuss-gnuradio] DBSRX Error in Latest GR+UHD

[Marcus D. Leech]

> I have a USRP1 with a WBX and a DBSRX installed.  Everything worked 
> fine with the gr-3.3.0-rc3 and even several months ago when I started 
> using Marcus Leech's script.  But lately (within the past few weeks) 
> when building the latest GR+UHD (with ML's script), if I run a 
> flowgrpah that uses the DBSRX or uhd_usrp_probe, I get an error 
> message like the one below.  Does anyone know why this might be 
> occurring?  Apologies if this is better suited for the USRP USers group.
>
> address@hidden:~$ uhd_usrp_probe
> linux; GNU C++ version 4.5.2; Boost_104200; UHD_003.004.000-dac9a50
>
> -- Loading firmware image: /usr/local/share/uhd/images/usrp1_fw.ihx... 
> done
> -- Opening a USRP1 device...
> -- Loading FPGA image: /usr/local/share/uhd/images/usrp1_fpga.rbf... done
> -- Using FPGA clock rate of 64.000000MHz...
>
> UHD Warning:
>     DBSRX: Tuning exceeded vco range, _max2118_write_regs.osc_band == 0
>
> UHD Error:
>     The daughterboard manager encountered a recoverable error in init
>     AssertionError: _max2118_read_regs.adc != 0
>       in double dbsrx::set_lo_freq(double)
>       at /home/spacequest/uhd/host/lib/usrp/dboard/db_dbsrx.cpp:370
> Error: RuntimeError: Cannot create! Property already exists at: 
> /mboards/0/dboards/B/rx_frontends/0/name
>
> System is Ubuntu 11.04 x86 on a Mac Book Pro.
>
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Oh, Josh!  There seems to be a problem.

[I had the same issue from one of my IRA customers in Mexico, but 
dismissed it as a fluke, but this is the second instance of that
  error with a DBSRX I've heard of].


This sounds like a regression in the latest UHD.  They've re-engineered 
the entire "daughterboard properties" framework inside UHD,
  and there are, it seems, a few wobbly bits.

Keep in mind that build-gnuradio always fetches the latest GIT "master", 
rather than the latest "release"--so occasionally, stuff won't
  work.  I spoze that if I were stroked appropriatley, I might add a 
feature to build-gnuradio to download only the "released" GIT
  code, rather than whatever is on the current master.



--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org